"The Democratic Party has thrown big support behind Katie McGinty because a victory over incumbent Pat Toomey could mean a shift in climate policy in the Senate."

"When the Democrats threw their weight behind Katie McGinty in the race for Pennsylvania's U.S. Senate seat, they signaled this race is one of their best hopes for climate action in a new Congress.

The party also was marking the limits of its green ambitions.

In a race that could be key to deciding control of the Senate, McGinty is seeking her first elective office after a career steeped in environmental policymaking. Starting as a Senate aide to Al Gore in the 1980s, she later served as top White House environmental adviser in Bill Clinton's administration, then returned to her home state to head Pennsylvania's environmental agency."